D.C. Mun. Regs. tit. 25, r. 25-E103
If necessary, to protect against public health hazards or nuisances, the Department may impose specific requirements in addition to the requirements contained in these Regulations that are authorized pursuant to "An Act To authorize the Commissioners of the District of Columbia to make regulations to prevent and control the spread of communicable and preventable diseases", approved August 11, 1939 (53 Stat. 1408; D.C. Official Code § 7-131) .
Public health shall be protected as determined by the Department for cosmetology and esthetic procedures that are not specifically addressed in this Subtitle.
The Department shall document the conditions that necessitate the imposition of additional requirements and the underlying public health rationale. The documentation shall be provided to a license applicant or licensee and a copy shall be maintained in the Department's file for the barber, cosmetology, and personal grooming facility.
D.C. Mun. Regs. tit. 25, r. 25-E103